Apparatus for proportioning and mixing materials for concrete



Nov. 11, 1930. J, w, s 1,780,988

APPARATUS FOR PROPORTIONING AND MIXING MATERIALS FOR CONCRETE Filed Aug. 19. 1929 4 Sheets-Sheet l INVENTOR- WITNESS Jail/n, Fl 5,;

ATTORNEY Nov. 11, 1930. J. w. SPRY 1,780,988

APPARATUS FOR PROPORTIONING AND MIXING MATERIALS FOR CONCRETE Filed Aug 19. 1929 4 Sheets-Sheet v 2 0 N mu INVENTOR (iguzss John W? 6 3.

' I BY v 0 ATTORN EY Y Nov. 11, 1930. J. w. SPRY 1,780,988

APPARATUS FOR PROPORTIONING AND MIXING MATERIALS FOR CONCRETE Filed Aug. 19. 1929 4 Shets-Sheet 5 i i i I INVENTOR WITNESS John W QQW? 7 BY MM qo.

ATTORNEY Nov. 11, 1930. J. w. SPRY 1,780,988

APPARATUS FOR PROPORTIONING AND MIXING MATERIALS FOR CONCRETE Filed Aug. 19. 1929 4 Sheets-She et 4 gi llmillm,

. INVENTOR WITNESS dd? M67017 BY CA W U224 ATTORN EY Patented Nov. 11, 1930 UNITED STATES PATENT orFzcE JOHN W. SPRY, or DALLAS, TEXAS APPARATUS FOR rnoron'rromne nn rarxnveivrArEnrALs non CONCRETE Application filed August 19, 1929. Serial No. 387,004.

that the arrangements permit relatively quick loading and exit of the trucks.

It is also within the scope of the'objects of the invention that the apparatus be so simplified in arrangement and operation that there will occur a considerable saving in labor over that necessary for operating the apparatus 539 now commonly employed for the same purose.

p Other objects, and objects relating to tie tails of construction and arrangement of units and parts will appear in the'detailed descrip- 25 tion to follow.

In the drawings:

Figure 1 is a top plan view of the apparatus constructed in accordance with the present invention,

Figure 2 is a vertical sectional view taken through the apparatus substantially on the line 22 of Figure 1, I

' Figure 3 is a view similar to Fig. 2 taken substantially on the line 3-3 of Figure 1,

Figure 45 is a fragmentary sectional view illustrating a bin or compartment,

Figure 5 is a perspective detail view illustrating a weighing receptacle and outlet therefor, Y I V Figure 6 is a top plan view of a modified form of the apparatus,

Figure 7 is a view partly in elevation and partly in vertical section of the same, and

Figure 8 is a detail perspective view of an extensible chute.

Referring to the generally a pit 12 and side walls13.. The walls forming the pit are preferably of reinforced concrete.

53 Each wall is inclined and converges toward drawings, 10 designates which is formed by end walls I the bottom of the pit whereby materials dumped into the pit will gravitate toward thecenter thereof." The pit is formed with a divlsion wall 1 1 for providing the two compartm The cuts 10 and 11. central and bottom portion of the wall 14- isfo rmed with a bulge 15 on each side thereo tainer '16. The container 16 has communi-' catlng therewith a-vent pipe 17 and a feed f to provide a housing 15 for a conpipe 18 which terminates at its outer end in a hopper 19.

Centrall of the pit are provided four pillars or posts which are arranged in pairs, two

being placed on each sideof the wall it as shown at 20 and 21, respectively. Upon each pair of pillars there is seated an I-beam 22 upon which rests I-beams 23 that support rails 24. The rails 24 be further supported by suitable concrete blocks 25.

As best shown in Figs. 2 and 3,"the pillars 20 and 21 are extended considerably below the bottom of the pit 10. The necessary excavations are made to permit trucks to pass beneath the pit 10. For this purpose a road- 1 bed 25 is provided which is preferably of reinfo rced concrete. As shown in Figs. 2 and 3 the roadbed extends between the pillars 20 and pillars 21, and each end thereof termi nates in an inclined section 26 which is provided with suitable retainer walls 27.

lit a suitable distance above the roadbed 25 It provide a plat-form 28 which may be supported form 28 by the pillars 20 and 21. The plathas constructed therewith a loading funnel 29 which is located at a suitable point for di scharging materials into the receiving body of a truck as indicated at 30.

The which mixed platform 29 also supports a mixer 31 is adapted to discharge the materials thereby into the funnel 29. The mixer 31 is provided with a hopper 32,.above which there which are arranged three spouts 33, all of are adaptedto discharge materials into the hopper 32. The spouts 33 may be supported in any convenient manner as by suitable brackets or supports (not shown) extending from the pillars 20 and 21. Each spout ceptac 33 is in register with a. weighing rele 34: and each weighing receptacle regi or) 1 5 x rant ll. The leverarin39 carries a -thumb screw whereby said lever :may

isters with an outlet pipe 35. 'The outlet pipes communicate with the compartments 10 and 11 and the container 16. a 7

In Figure 5 I have shown the specific structureof a weighing receptacle 34. As is seen the receptacle is cylindrical and p votally supported by a bifurcated a121n736 .The arm 36 extends rroma scale (not shown) of suitable construction which may be supported in' any convenient manner by the pillars and 21. Each receptacle-34 tern'iinates'at -itslower end ina reduced POItlQI13'Z- Wlll0l1 is'provided with a closure plate or' gatef38 hinged'to an V operating lever 39; The-lever-39- is pivoted,

as at 40, and adaptedto swingover aquadag'a'inst-swinging movementg ii-Each outlet pipe 35 is provided with plate closure or gate l2, and anopera'ting handle 43. The structure of the gate 42 and operating .handletherefo-r is the sameas utilized'for the Weighing receptacles 34; f

It should be noted that the pillars and 21' are supported by suitable concrete bases lland that the roadbed 25'n1ay. be provided with a drain pipe, as at 45. a o

In utilizing my apparatus'for mixing materials (for concrete, gravel may be dumped into the compartment 11'v and sandinto coinpartment 10 from a car-onthe rails 24' Ce- 1 ment may be dumped into the hopper 1-9 for filling:tl1'e container 16, The amount ofv materials desired maybeobtained from the outlets 35, weighed in the receptacles 34, mixed by themixer 31 and then permitted to, dis- 7 charge through funnel 29 into the dump-body I r the apportioning, mixing, and loading of them materials can be accomplished with a mini- 4:6 for providing-two compartments 47 and of a waiting-truck. As is clearlyapparen't mum of-labor andtime. Also, it-is apparent that the apparatus would notineed repair and A could be operatedata relatively low cost. Now, referring to Figs; 6 to 8, inclusive, 1 have'shown a pit divided by a central wall I 48, The pit is constructed similar to that shown in Figs.;1 to 4, inclusive. The division Wall lfS is constructed for providing a housing 49 for the cementqcontainer or bin '50.

The container is provided'withla vent pipe 51 and a" feed pipe 52. Innrderto elevate i the materials for-mixing and loading, I provide'two tracks 53and: 5Swhich are arranged a as shown with relation to the compartments '47 a-nd 48 and- Tcement container or bin 50. -Suitable dump-ears 54'and 54.. are provided, each being connectedto 0116 end ofa cable -.55, the:other: end ofleach cablezbeing conelectric motor or the like.

ne'cte'd-tda dru mcvslhich maybe driven byan position beneath therchutes? 55. as illustrated in -Fig'-. 7.-- Eachgchute is in register'with iav weighing receptacle "56 which; in ;turn 'regisbe alocked,

into said hopper, and

ters with an outlet pipe 57." Theiwei 'hing receptacles and outlet pipes are provided struct-ion shown in Fig. 5;

The chutes 55 are constructed as specificall 1 shown in F1 8. Each chutecom 3381868 I with hand-lever operated gates of the coir tad telescopic pipe sections 58: and 59, the section 59 being supported for universal move ment throughabracket 60 and ball and socket joint 61. The upper end of' section 59 is i formed --With*--an outwardly flared lip 62 to facilitate the reception of material from the associated weighing receptacle 565* The section 58 is provided with handles 63 and an apertured car 64 to which is connected one iend of a cable 65, said cablerpassing over a pulley 66and having; securetbto its other end asuitable counterweight 67. v V, The upper ends of tracks '53, and'53x' are supported by a suitable frame'structure 68,

mixer 70 ha'ving a hopper 71 in register with 'aichutje 72 into which the materials mayv be.

dumped from thecars 5.4 and 54-. It will be understood that the materials mixed by the mixer 71 can be discharged into the receiving body of a'truck'beneaththe platform 69.

In utilizing the apparatus shown in Figs. 6 to 8, inclusive, one ofthe cars 5 l'54"'is g "andfOrWardtothis frame thereis provided a platform-69 beneath whichatruck may pass as shown, The platform 69 supports a broughtto the position shown in Fig. 7 and an operator grasps the chutes 55 and swings orlowersthem ';to the desired position for discharginginto the car. The operator can 1 now obtain from the outlet pipes 5Z-the amount; of gravel, cement, and sand desired, we1gh the materials in the, receptacles 56 and discharge them through the chutes 55 into the car therebeneath. As isobvious the chutes 55 can be easily and quickly arranged or ad usted-fOr discharging materials *into a car on either track. After the desired amount of. materials are discharged into a car, the car is-drawnto' the upper en'dof the, track anddumped into chute 72'which d'e livers the materials into the mixer-hopper 71. After the materials are 7 mixed they care beneath the'platform '69.

I claim:

- 1; A gravity dumped intotthe receiving body of thetruck compartments with inclined walls to direct materials therein'to flow toward the center of the pit, a container betweenthe compart- 1nents, a-mixer hopper beneath the center of v the p1t,- vertically disposed outlet pipes compartments with inclined walls to direct feed concrete mixing apparatus orplant-comprising a pit divided into a; loading funnel bematerials therein to flow toward the center of the pit, a container between the compartments, a mixer hopper beneath the center of the pit, vertically disposed outlet pipes whereby materials may bedischarged from each of said compartments into said hopper, a loading tunnel beneath the mixer hopper, and a roadway beneath the loading funnel whereby the mixed materials may be discharged into the receiving body of a vehicle. 3. A concrete material mixing apparatus comprising a pit and a. central division wall to provide two compartments, the walls of which are inclined to cause materials therein to fiow toward the division wall, a container within the division wall, a hopper beneath the pit, and pipe outlets whereby materials from eachof the compartments and container may be discharged into said hopper.

4. A concrete material mixing apparatus comprising a pit and a central division wall to provide two compartments, the Walls of which are inclined to cause materials therein to tlow toward the division wall, a container within the division wall, a hopper beneath the pit, pipe outlets whereby materials from each of the compartments and container may be discharged into said hopper, and weighing receptacles between the outlet pipes and hopper.

5. A concrete material mixing apparatus comprising a pit and a central division wall to provide two compartments, the walls of which are inclined to cause materials therein to flow toward the division wall, a container within the division wall, a feed spout for said container, a hopper beneath the pit, and pipe outlets whereby materials from each of the compartments and container may be discharged into said hopper.

6. A concrete material mixing apparatus comprising a pit and a central division wall to provide two compartments, the walls of which are inclined to cause materials therein to flow toward the division wall, a container within the division wall, weighing devices, a mixer, valve-controlled pipe outlets whereby materials maybe discharged from each compartment and from the container into the weighing devices, means for delivering the materials from the weighing devices into the mixer, and a roadway beneath the mixer whereby the mixed materials may be deposited into a vehicle body 2 for conveyance.

7. In a concrete mixing apparatus, a pit having inclined walls and provided with a partition dividing it into two compartments, one for sand and the other for gravel, a container for cement housed in the partition,

the container having a feed pipe extending out through one side of the pit and a vent pipe extending out through the top of the partition.

JOHN W? SPRY. 

